How severe is CVE-2022-21744?

CVE-2022-21744 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-21744 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-21744?

CVE-2022-21744 primarily affects Mediatek Lr11. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-21744?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-21744 published?

CVE-2022-21744 was published on 2022-07-06 and last updated on 2026-06-17.

CVE-2022-21744

CVE-2022-21744 is a critical-severity vulnerability in Mediatek Lr11 with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Mediatek Lr11
Published: 2022-07-06
Last modified: 2026-06-17

Description

In Modem 2G RR, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution when decoding GPRS Packet Neighbour Cell Data (PNCD) improper neighbouring cell size with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY00810064; Issue ID: ALPS06641626.

Frequently asked questions

What is CVE-2022-21744?: In Modem 2G RR, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution when decoding GPRS Packet Neighbour Cell Data (PNCD) improper neighbouring cell size with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY00810064; Issue ID: ALPS06641626.
How severe is CVE-2022-21744?: CVE-2022-21744 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-21744 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-21744?: CVE-2022-21744 primarily affects Mediatek Lr11. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-21744?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-21744 published?: CVE-2022-21744 was published on 2022-07-06 and last updated on 2026-06-17.

References

https://corp.mediatek.com/product-security-bulletin/July-2022

Affected products (7)

cpe:2.3:o:mediatek:lr11:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:lr12:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:lr12a:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:lr13:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:lr9:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:nr15:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:nr16:-:*:*:*:*:*:*:*

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